Page 137 - ebook fluid mechanics_finalize

FLUID MECHANICS

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4. A pipe carrying 0.056 m /s suddenly changes diameter from;

a) 200 mm to 150 mm

b) 300 mm to 150 mm

c) 450 mm to 150 mm

Find the loss of head and the pressure difference across the contraction in each case,

given CC = 0.6

5. Water flows vertically downwards through a 150 mm diameter pipe with a velocity of

2.4 m/s. The pipe suddenly enlarges to 300 mm in diameter. Find the loss of head. If

the flow is reversed, find the loss of head, assuming the coefficient of contraction now
being 0.62.

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